diff --git a/manifest.json b/manifest.json
index 7034e4d..e34c20e 100644
--- a/manifest.json
+++ b/manifest.json
@@ -14,7 +14,7 @@
         "email": "pierre@kayou.io"
     },
     "requirements": {
-        "yunohost": ">= 3.6.0"
+        "yunohost": ">= 3.8.1"
     },
     "multi_instance": false,
     "services": [
diff --git a/scripts/_common.sh b/scripts/_common.sh
index 3bf74f9..0981cca 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -101,74 +101,3 @@ ynh_is_main_device_a_sd_card () {
 		return 1
 	fi
 }
-
-# Check the amount of available RAM
-#
-# usage: ynh_check_ram [--required=RAM required in Mb] [--no_swap|--only_swap] [--free_ram]
-# | arg: -r, --required= - Amount of RAM required in Mb. The helper will return 0 is there's enough RAM, or 1 otherwise.
-# If --required isn't set, the helper will print the amount of RAM, in Mb.
-# | arg: -s, --no_swap   - Ignore swap
-# | arg: -o, --only_swap - Ignore real RAM, consider only swap.
-# | arg: -f, --free_ram  - Count only free RAM, not the total amount of RAM available.
-ynh_check_ram () {
-	# Declare an array to define the options of this helper.
-	declare -Ar args_array=( [r]=required= [s]=no_swap [o]=only_swap [f]=free_ram )
-	local required
-	local no_swap
-	local only_swap
-	# Manage arguments with getopts
-	ynh_handle_getopts_args "$@"
-	required=${required:-}
-	no_swap=${no_swap:-0}
-	only_swap=${only_swap:-0}
-
-	local total_ram=$(vmstat --stats --unit M | grep "total memory" | awk '{print $1}')
-	local total_swap=$(vmstat --stats --unit M | grep "total swap" | awk '{print $1}')
-	local total_ram_swap=$(( total_ram + total_swap ))
-
-	local free_ram=$(vmstat --stats --unit M | grep "free memory" | awk '{print $1}')
-	local free_swap=$(vmstat --stats --unit M | grep "free swap" | awk '{print $1}')
-	local free_ram_swap=$(( free_ram + free_swap ))
-
-	# Use the total amount of ram
-	local ram=$total_ram_swap
-	if [ $free_ram -eq 1 ]
-	then
-		# Use the total amount of free ram
-		ram=$free_ram_swap
-		if [ $no_swap -eq 1 ]
-		then
-			# Use only the amount of free ram
-			ram=$free_ram
-		elif [ $only_swap -eq 1 ]
-		then
-			# Use only the amount of free swap
-			ram=$free_swap
-		fi
-	else
-		if [ $no_swap -eq 1 ]
-		then
-			# Use only the amount of free ram
-			ram=$total_ram
-		elif [ $only_swap -eq 1 ]
-		then
-			# Use only the amount of free swap
-			ram=$total_swap
-		fi
-	fi
-
-	if [ -n "$required" ]
-	then
-		# Return 1 if the amount of ram isn't enough.
-		if [ $ram -lt $required ]
-		then
-			return 1
-		else
-			return 0
-		fi
-
-	# If no RAM is required, return the amount of available ram.
-	else
-		echo $ram
-	fi
-}
diff --git a/scripts/install b/scripts/install
index ae14bb8..7037ad0 100644
--- a/scripts/install
+++ b/scripts/install
@@ -107,7 +107,7 @@ ynh_install_app_dependencies $pkg_dependencies
 puma_worker_processes=$(( $(nproc) > 2 ? $(nproc) : 2 ))
 
 # If the server has less than 2GB of RAM
-if [ $(ynh_check_ram --no_swap) -lt 2000 ]; then
+if [ $(ynh_get_ram --total --ignore_swap) -lt 2000 ]; then
 	puma_min_threads=1
 	puma_max_threads=1
 else
@@ -123,8 +123,8 @@ ynh_app_setting_set --app=$app --key=puma_min_threads --value=$puma_min_threads
 # ADD SWAP IF NEEDED
 #=================================================
 
-total_memory=$(ynh_check_ram)
-total_swap=$(ynh_check_ram --only_swap)
+total_memory=$(ynh_get_ram --total)
+total_swap=$(ynh_get_ram --total --only_swap)
 swap_needed=0
 
 # https://docs.gitlab.com/ce/install/requirements.html#memory
diff --git a/scripts/restore b/scripts/restore
index adc9e3b..40e51d0 100644
--- a/scripts/restore
+++ b/scripts/restore
@@ -66,8 +66,8 @@ ynh_install_app_dependencies $pkg_dependencies
 # ADD SWAP IF NEEDED
 #=================================================
 
-total_memory=$(ynh_check_ram)
-total_swap=$(ynh_check_ram --only_swap)
+total_memory=$(ynh_get_ram --total)
+total_swap=$(ynh_get_ram --total --only_swap)
 swap_needed=0
 
 # https://docs.gitlab.com/ce/install/requirements.html#memory
diff --git a/scripts/upgrade b/scripts/upgrade
index 0605a7e..33e8db9 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -67,7 +67,7 @@ if [ -z "$puma_worker_processes" ]; then
 	puma_worker_processes=$(( $(nproc) > 2 ? $(nproc) : 2 ))
 
 	# If the server has less than 2GB of RAM
-	if [ $(ynh_check_ram --no_swap) -lt 2000 ]; then
+	if [ $(ynh_get_ram --total --ignore_swap) -lt 2000 ]; then
 		puma_min_threads=1
 		puma_max_threads=1
 	else
@@ -191,8 +191,8 @@ ynh_install_app_dependencies $pkg_dependencies
 # ADD SWAP IF NEEDED
 #=================================================
 
-total_memory=$(ynh_check_ram)
-total_swap=$(ynh_check_ram --only_swap)
+total_memory=$(ynh_get_ram --total)
+total_swap=$(ynh_get_ram --total --only_swap)
 swap_needed=0
 
 # https://docs.gitlab.com/ce/install/requirements.html#memory